Flashcards
Cardiac terms
Cards in this deck (26)
- 1Coronary arteriesCarry O2 to heart
- 2Coronary viensCarry CO2 from hear drains into coronary sinus and is dumped into right atrium
- 3SA and AV nodeSinoartial node and Atrioventricular node
The SA node is a natural pacemaker of the heart which conduct impulses between the two nodes for the atrium to contract - 4How does the hart beat fasterThrough sympathetic nervous system
releases epinephrine/norepinephrine
Which causes this result on the heart - 5What causes the heart to slow down?Through the parasympathetic nervous system
releases acetylcholine from cranial nerve X
Which causes this result on the heart - 6Neural reflex of circulatory control What is baroreceptor reflex?Mechanoreceptors that detect change in in heart pressure
To increase BP the sympathetic nervous system kicks in
To decrease BP the parasympathetic nervous system kicks in - 7Neural reflex of circulatory control What is the bainbridge reflex?During venous return when the receptors in the wall of the atrium stretch
this sends a single to the medulla
to activate the parasympathetic nervous system (do no get this confuse it increases BP anyway) - 8ChemoreceptorsIn the aortic body which respond to changes in pH
- 9Valsalva maneuverDuring forced expiration against a closed glottis
Results in increase venous pressure which decrease venous return to right atrium
this kicks in the sympathetic nervous system causing an increase in HR - 10SystoleWhich the atrium or ventricle contracts
(top number) - 11Diastolewhen the atrium and ventricles are filling up with blood
(bottom number) - 12SVStroke volume
The amount of blood pumped which each beat
Normal is 60-80 ml - 13COCardiac output
amount of blood pumped per minute
Normal for male is 4.5-5.0 ml/min - 14PreloadAmount of blood in ventricles during end of diastole before contraction
- 15AfterloadPressure needed to open aortic to push blood out
- 16AnemiaLow amounts of red blood cells
- 17PolycythemiaHigh amounts of red blood cells
- 18Thrombosisclotting of arteries/veins which block blood flow
- 19ThrombocytopeniaLow platelets
- 20ThrombocythemiaHigh platelet count
- 21LeukopeniaLack of white blood cells
- 22LeukocytosisHigh amounts of white blood cells
- 23LeukemiaFrom cancer
abnormal white blood cells
High amounts are produced since they can not perform their function properly - 24What are the primary muscles for inspiration?Diaphragm (primary)
External/intercostal muscles (which expand during inspiration) - 25What are the primary muscles for exhalation?Same muscles as inspiration but with the passive recoil
- 26What is the primary muscles for a forced exhalation?Rectus abdominis
External/internal obliques
Transverse abdominis
Information
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- Based on PTA exam book
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- Deleted user · Oct 2018
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- Oct 9, 2018
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- Created by Justin Lao · Oct 9, 2018
- Copied by Justin Lao · Oct 9, 2018
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